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America UNS S42640 马氏体铬钴钼镍钒铌不锈钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S42640 / S42640
Category Grade Standard Region/Area Standard Content
Metals S42640 -- America 马氏体铬钴钼镍钒铌不锈钢

Chemical composition(mass fraction)(wt.%) of the S42640

Element Min Max Similar
W - 0.2500 -
V 0.4000 0.8000 -
Si - 1.0000 -
S - 0.0100 -
P - 0.0200 -
Ni 1.7500 2.7500 -
Nb 0.0100 0.0500 -
Mo 3.0000 5.0000 -
Mn - 1.0000 -
Cu - 0.1000 -
Cr 13.0000 16.0000 -
Co 11.0000 14.0000 -
C 0.1000 0.2500 -

Mechanical Properties of steel grade S42640

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
485 (≥) 913 (≥) 14 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade S42640

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
34 - -     0.44 -  
475 313 - 22.3 334   -  
415 - 31 31.2   124 121

Heat Treatment of steel grade S42640

Heat treated : 1231°C - 1953°C

Technological Curves of steel grade S42640

Cross Reference Table (Equivalent Grade) of S42640

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